Project recreates cities in rich 3D from images harvested online

People are taking photos and videos all over major cities, all the time, from every angle. Theoretically, with enough of them, you could map every street and building — wait, did I say theoretically? I meant in practice, as the VarCity project has demonstrated with Zurich, Switzerland. This multi-year effort has taken images from numerous online sources — social media, public webcams, transit